A randomized controlled trial was performed between June and December 1989 in 379 outpatients to evaluate whether a patient information booklet is able to reduce anxiety levels before gastroscopy orâ€¦ (More)

H. Plank,1 L. E. Golub,2 S. Bauer,1 V. V. Belâ€™kov,2 T. Herrmann,1 P. Olbrich,1 M. Eschbach,3 L. Plucinski,3 C. M. Schneider,3 J. Kampmeier,3 M. Lanius,3 G. Mussler,3 D. GrÃ¼tzmacher,3 and S. D.â€¦ (More)

We introduce scattering-symplectic manifolds, manifolds with a type of minimally degenerate Poisson structure that is not too restrictive so as to have a large class of examples, yet restrictiveâ€¦ (More)

Morse theory could be very well be called critical point theory. The idea is that by understanding the critical points of a smooth function on your manifold, you can recover the topology of yourâ€¦ (More)

Generalized from the classic de Bruijn sequence, a universal cycle is a compact cyclic list of information. Existence of universal cycles has been established for a variety of families ofâ€¦ (More)

Given a compact oriented surface, we classify log Poisson bivectors whose degeneracy loci are locally modeled by a finite set of lines in the plane intersecting at a point. Further, we compute theâ€¦ (More)

Because Poisson cohomology is quite challenging to compute, there are only very select cases where the answer is known. In the case of a symplectic manifold where the Poisson bi-vector isâ€¦ (More)